Effect of ABA seed pre-treatment on the response of wheat (Tritium aesitivum L.) to salinity, with special reference to plant growth, ion relations and protein patterns

Din, J and Flowers, T J (2002) Effect of ABA seed pre-treatment on the response of wheat (Tritium aesitivum L.) to salinity, with special reference to plant growth, ion relations and protein patterns. In: Ahmad, R and Malik, K A (eds.) Prospects for Saline Agriculture. Tasks for Vegetation Science (37). Springer, pp. 145-154. ISBN 9781402006203

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Abstract

Abscisic acid (ABA) is an important plant growth hormone. Seeds of wheat varieties differing in salinity resistance were treated with ABA during imbibition and the response to this seed pre-treatment, both under control and saline conditions was evaluated later in the plant life cycle. ABA seed pre-treatment significantly increased the plant growth of salinity sensitive wheat variety; Punjab-85, under NaCl salinity. Further, it reduced the Na+ in third leaf and the fluxes of Na+ (38%) and Cl- (40%) and increased those of K+ (12%) in the plants of same wheat variety. Further, S-K,S-Na calculated in the xylem sap was also enhancement with ABA pre-treatment in Punjab-85 under saline conditions. Comparison of proteins, separated by two-dimensional gel electrophoresis, demonstrated the presence of three new proteins in the extract from ABA pre-treated plants. These ABA-induced proteins, were of molecular weights 15, 18 and 23 kDa. This study has established that ABA seed pre-treatment increased the salinity resistance of the sensitive wheat variety, Punjab-85. The increase in salinity resistance correlated with a reduction in sodium uptake. Further, pre-treatment caused new proteins to be synthesized.

Item Type: Book Section
Additional Information: Times Cited: 0 Din, J Flowers, TJ International Seminar on Prospects for Saline Agriculture 2000 Islamabad, pakistan
Schools and Departments: School of Life Sciences > Evolution, Behaviour and Environment
Subjects: Q Science
Depositing User: Catrina Hey
Date Deposited: 22 May 2012 11:48
Last Modified: 30 Nov 2012 17:12
URI: http://sro.sussex.ac.uk/id/eprint/39033
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